APA aipamena

Singh, A., & Sharma, U. (1984). Current practices in environmental enginering. International Book Traders.

Chicago Style aipamena

Singh, Alam, and U.S Sharma. Current Practices in Environmental Enginering. Delhi: International Book Traders, 1984.

MLA aipamena

Singh, Alam, and U.S Sharma. Current Practices in Environmental Enginering. International Book Traders, 1984.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.